APA (7th ed.) Citation

Oxford University Press & Clapham, C. (1991). The concise Oxford dictionary of mathematics. Oxford University Press.

Chicago Style (17th ed.) Citation

Oxford University Press and Christopher Clapham. The Concise Oxford Dictionary of Mathematics. Oxford: Oxford University Press, 1991.

MLA (8th ed.) Citation

Oxford University Press and Christopher Clapham. The Concise Oxford Dictionary of Mathematics. Oxford University Press, 1991.